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RpPrtStdEmitterStandard Struct Reference
[RpPrtStd]

Collaboration diagram for RpPrtStdEmitterStandard:

Data Fields
RwInt32	seed
RwInt32	maxPrt
RwReal	currTime
RwReal	prevTime
RwV3d	force
RwV3d	emtPos
RwV3d	emtSize
RwReal	emtEmitGap
RwReal	emtEmitGapBias
RwReal	emtPrevEmitTime
RwReal	emtEmitTime
RwInt32	emtPrtEmit
RwInt32	emtPrtEmitBias
RwReal	prtInitVel
RwReal	prtInitVelBias
RwReal	prtLife
RwReal	prtLifeBias
RwV3d	prtInitDir
RwV3d	prtInitDirBias
RwV2d	prtSize
RwRGBA	prtColor
RwReal	prtDelta2DRotate
RwTexCoords	prtUV [4]
RwTexture *	texture
RwMatrix *	ltm

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Detailed Description

A structure represent the set of properties for a basic emitter. The structure is stored as a single optional data in the emitter property table.

The basic emitter uses a 'time' variable to control particle emissions. A large time gap between emission can give pulse effects where as a small time gap produces a streaming effects. Particles can be emitted from a single point, line, area or a volume.

Particles emitted from an emitter are of the same type. An emitter cannot emit different types of particles. Once an emitter has reached its maximum number of particles, no further particles are emitted until some of the existing particles have died.

Most properties have a bias value to vary the property's value. This uses the seed field to give a degreee of randomness.

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Field Documentation

RwReal currTime

Current timestamp for emitter

RwReal emtEmitGap

Time gap between emission

RwReal emtEmitGapBias

Time gap bias

RwReal emtEmitTime

Next particle emission time

RwV3d emtPos

Emitter position

RwReal emtPrevEmitTime

Previous particle emission time

RwInt32 emtPrtEmit

Number of particle emit per emission

RwInt32 emtPrtEmitBias

Particle emission bias

RwV3d emtSize

Emitter size. This is the volume where new particles are emitted

RwV3d force

External force applied to particles

RwMatrix* ltm

LTM to transform particle coordinates from local space to world space

RwInt32 maxPrt

Maximum number of active particles

RwReal prevTime

Previous timestamp for emitter

RwRGBA prtColor

Particle's color. This is ignored if each particle has its own colors.

RwReal prtDelta2DRotate

Particle's 2D rotation in radians. This is ignored if each particle has its own rotation.

RwV3d prtInitDir

Particle's initial direction

RwV3d prtInitDirBias

particle's initial direction bias

RwReal prtInitVel

Particle's initial speed

RwReal prtInitVelBias

Particle's initial speed bias

RwReal prtLife

Particle's duration

RwReal prtLifeBias

Particle's duration bias

RwV2d prtSize

Particle's size. This is ignored if each particle has its own size.

RwTexCoords prtUV[4]

Particle's texture coordindates

RwInt32 seed

Seed for random number generator

RwTexture* texture

Particle's texture

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